Skip Ribbon Commands
Skip to main content




Ultra performance. No compromise.TM

​The Capiox® NX19 oxygenator with UltraPrime™ Technology is our smallest, most advanced fullsize adult oxygenator to date. Building on Terumo’s oxygenator legacy, the Capiox® NX19 oxygenator features high gas transfer utilizing new proprietary hollow fiber, enhanced gaseous microemboli (GME) removal technology, and a highly efficient heat exchanger that delivers the standard of safety1 and performance that you trust from Terumo.

By uniquely combining materials and technologies engineered to deliver Ultra performance, the Capiox® NX19 oxygenator is everything you expect in a fullsize oxygenator with the benefit of the lowest prime volume available2.


​Smaller hollow fiber with high efficiency

Hollow fiber is the heart of the oxygenator. With decades of experience of in-house hollow fiber development and manufacturing, Terumo now created a smaller hollow fiber with higher efficiency. This innovative hollow fiber – woven in a unique pattern – provides low priming volume and surface area reduction while delivering high gas exchange performance in combination with a lower transmembrane pressure drop.

Lower priming volume

  • Minimizes hemodilution – resulting in fewer red blood cell (RBC) transfusions, which are associated with infection, ischemic postoperative morbidity, longer hospital stays, and higher hospital costs3
  • Maintains higher hematocrit – potentially educing acute kidney injury (AKI)4,5

Less foreign surface area

  • Reduces risk of inflammatory reaction6
Highly efficient heat exchange

Terumo‘s choice of polymer material and small capillary design  increases performance in warming and cooling.2 Clinicians can be confident in the heat exchanger‘s efficiency with the benefit of low prime in a smaller device.

Innovative air removal technology

Plastic heat exchangers retain air bubbles in the spaces between the heat exchange layers. Leveraging our own hollow fiber technology, Terumo has developed a new patent-pending pre-heat-exchanger air removal technology. This technology in combination with our original self-venting technology and Prime Assist™ feature ensures excellent GME removal.

 Pre-heat-exchanger air removal technology

  • Removes air and prevents it from becoming trapped in the heat exchanger – reducing the potential for inflammatory reactions7

Proven self-venting technology and integrated arterial filter

  • Provides the safety2 of arterial filtration with less foreign surface area and no added prime volume – simplifying the circuit and assuring that the oxygenator is fully primed

Prime AssistTM feature

  • Enables easier prime – efficiently removing air without tapping and manipulation

General specifications


Housing materialPolycarbonate
Fiber materialMicroporous polypropylene
Heat exchanger material Polypropylene Terephthalate
Fiber bundle surface areaApprox. 1.9 m²
Heat exchanger surface areaApprox. 0.43 m²
Blood flow range

Min. 2.0 L/min (or 0.5L/min for up to 2 hours)

Max. 8.0 L/min

Prime volume (static)185 mL + 10%
Blood inlet port (from pump)3/8" (9.5 mm)
Blood outlet port3/8" (9.5 mm)
Cardioplegia Port1/4" (6.4 mm)
Gas inlet port1/4" (6.4 mm)
Gas outlet port5/16" (7.9 mm)
Water ports (Hansen quick-connect fittings) 1/2" (12.7 mm)
Maximum pressure: Blood Inlet133 kPa (1.000 mmHg) (1.36kgf/cm²)
Maximum pressure: Water Inlet196 kPa (1.470mmHg) (2kgf/cm²)

Arterial filter

Arterial filter
​Filter Material
​Polyester screen type
Pore size32 µm
Surface area360 cm²

Hardshell reservoir

Hardshell reservoirNX19
Housing materialPolycarbonate
Venous filter materialPolyester screen type
Cardiotomy filter materialPolyester depth type 
Defoamer materialPolyurethane foam
Blood flow range: Venous flowMin. 2.0 L/min (or 0.5 L/min for up to 2 hours)
   Max. 8.0 L/min
Blood flow range: Cardiotomy inletMax. 5.0 L/min
Blood flow range: Combined flowMax. 8.0 L/min
Blood storage capacity4.000 mL
Minimum operating volume150 mL
Venous blood inlet port1/2" (12.7 mm) rotatable
Blood outlet port (to pump)3/8" (9.5 mm)
Suction portsSix  1/4" (6.4 mm)
Vertical port (to CR filter)3/8" (9.5 mm)
Quick prime port1/4" (6.4 mm)
Vent port1/4" (6.4 mm)
Auxiliary port1/4" - 3/8" (6.4 mm - 9.5 mm)
Luer portsThree filtered luer locks to cardiotomy filter, one non-filtered luer lock, two luer locks on venous inlet.
Positive pressure relief valve1.1 kPa ( 0 to 8 mmHg)
Maximum sustainable negative pressure in reservoir-20 kPa ( -150 mmHg)


Xcoating-Logo-TM_CMYK.pngXcoating™ Surface Coating, Terumo Corporation's biocompatible amphiphilic polymer surface coating, is a standard feature on the Capiox® NX19 Oxygenator with UltraPrime™ Technology.  

Item specifications

Capiox® NX19 Oxygenator comes in two configurations. Place the blood outlet port facing forward as indicated in the photo. The blood inlet port orientation is (W)est – LEFT or (E)ast – RIGHT side. 

oxy west nx19.PNG

Capiox® NX19 Oxygenator with Integrated Arterial Filter and UltraPrimeTM Technology

​Catalog #Units/Case
Capiox NX.PNG​ ​
Hollow fiber oxygenator with 4.000 mL hardshell reservoir, “West” orientation 
Hollow fiber oxygenator with 4.000 mL hardshell reservoir, “East” orientation
3CX*NX19RE ​4
Hollow fiber oxygenator “West” orientation 
Hollow fiber oxygenator “East” orientation 

Holders for CAPIOX® NX19 Oxygenators

DescriptionCatalog #Units/CaseUnits/Case
Holder for NX19 oxygenator without hardshell reservoirXX*CXH15 1
Holder for NX19 oxygenator with hardshell reservoir (long angled arm)

Holder for NX19 oxygenator when separated from reservoirXX*CXH25F 1
Holder for NX19 oxygenator with hardshell reservoir (short non-angled arm)XX*XH0321

Accessories for CAPIOX® NX19 Oxygenators

​Description​Catalog #​Units/Case
​Blue thermistor wireCX*BP021​10​
Red thermistor wire​CX*BP022​10​


1. Gomez D et al. Evaluation of air handling in a new generation neonatal oxygenator with integral arterial fi lter Perfusion 2009; 24:107-112.

2. Internal testing, data on file.

3. Murphy GJ et al. Increased mortality, postoperative morbidity, and cost after red blood cell transfusion in patients having cardiac surgery. Circulation 2007; 116:2544-2552.

4. Ranucci M et al. Effects of priming volume reduction on allogeneic red blood cell transfusions and renal outcome after heart surgery. Perfusion 2015; 30:120-126.

5. Ranucci M et al. Acute kidney injury and hemodilution during cardiopulmonary bypass: a changing scenario. Ann Thorac Surg. 2015; 100:95-100.

6. Day JR, Taylor KM. The systemic infl ammatory response syndrome and cardiopulmonary bypass. Int J Surg. 2005; 3:129-140.

7. Barak M, Katz Y. Microbubbles: pathophysiology and clinical implications. Chest 2005; 128:2918-2932.

Do you need more info about this product?

Our sales representatives are here for you.

Contact us
Send us a message
I have read and accept Terumo Privacy And Cookies Policy and the Terms Of Use*
I wish to receive information and marketing updates from Terumo.
* mandatory fields

Thank you for contacting us!

We typically respond within 2 business days and will come back to you as soon as possible.

Didn't find your product?

Consult our products in our Product Index

Are you a healthcare professional?

This webpage can include promotional content regarding one or several products of Terumo Europe, or some procedures concerning the use or implantation of such products. This webpage is exclusively intended for healthcare professionals and is in no event directed to the general public